| 摘要 |
<p>PCT No. PCT/JP87/00401 Sec. 371 Date Oct. 22, 1987 Sec. 102(e) Date Oct. 22, 1987 PCT Filed Jun. 18, 1987 PCT Pub. No. WO87/07880 PCT Pub. Date Dec. 30, 1987.A heat shrinkable cylindrical laminated film having a polyvinylidene chloride type resin (I) as an oxygen gas barrier core layer, on the both surface side of which 1 or 2 resin layers are arranged respectively and consisting of 3-5 layers with total, characterized in that the cylindrical exterior surface resin layer on said layer (I) comprises a crosslinked polyolefin type resin layer (II) having a gel fraction [x] at the outermost layer of 25-70% by weight, a geld fraction [y] at the surface layer in the side of the layer (I) of 40% by weight or less and a gradient of gel fraction represented by [y/x] of 0.6 or less and the joint of said layers (I) and (II) comprises a laminate of a joint in a state denaturated by electron rays.</p> |
